MLB playing 'Big Brother' with social media

ARLINGTON, Texas - According to Mark Teahen, Major League Baseball sent out social media guidelines to the players and workers, letting them know that "Big Brother'' is watching what they tweet.
Teahen has been on Twitter since last year as ESPY_TEAHEN. He tweets from the perspective of his dog, ESPY.
"I don't think it was put into place for me,'' the third baseman said. "My dog gets out of line some times, but I'm pretty civil. I think it's more or less saying use commonsense, which I try to do anyway.
"I think it's commonsense anyway. I don't know if they even needed to put it out, but I guess some people out there might need that reminder.''